Warp-stop-motion for looms.



m 534 PATENTBD FEB.25, 1908. No, 87% J. CORZILIUS.

WARP STOP MOTION FOR LOOMS.

APPLICATION FILED AUG. 10. 1906. 2 SHBBTS SHEET 1' l l'lll l l l l l l WITNESSES:

W ATTORNEYJ'.

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PATENTED FEB. 25, 1908 J. GORZILIUS.

WARP STOP MOTION FOR LOOMS.

APPLICATION FILED AUG.10. 1906.

2 SHEETS-SHEET 2.

IH HIL WITNESSES:

UNITED STATES PATENT OFFICE.

JOSEPH CORZILIUS, OF SOUTH MANCHESTER, CONNECTICUT, ASSIGNOR TO ELLSWORTH & COMPANY, OF NEW YORK, N. Y., A FIRM.

WARP STOP-MOTION FOR LOOMS.

PatentedFeb. 25, 1908.

Application filed August 10. 1906- Serial No. 330008- To all whom it may concern:

Be it known that ILJOSEPI-I CORZILIUs, a citizen of the United States, residing at South Manchester, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Warp Stop-vfotions for Looms, of which the following is a specification.

The present invention relates to a warp stop motion for a pile fabric loom in'which the pile warps support a series of metallic drop devices during the normal running of the loom, said drops being adapted when a pile Warp breaks or becomes unduly slack, to close a controlling circuit for setting in operation the knock-off mechanism.

The object of the invention is to provide means to intermittently raise the drops from the pile warps to permit the latter to momentarily pass free of the drops for the purpose fully set forth in the following s pecification.

In the accompanying drawings Figure 1 is a side view partly diagrammatic of a pile fabric loom embodying the'invention; Fig. 2 a plan view of the loom stopping mechanism shown at the right in Fig. 1; Figs. 3 and 4 are enlarged detail views of the loom stopping mechanism; Fig. 5 a side view and Fig. 6 a

plan view of the easing bars or rods for the pile warps, and Fig. 7 a detail view of an easing bar or rod for the pile warps with a drop device in normal position.

Similar reference numerals indicate similar parts in the several views.

I will first describe the general parts of the loom and the knock-ofi or stopping mechanism which may be of any well known construction.

Referring to the drawings the numeral 1 designates the main warp beam; 2 the main or back warps; 3 the pile warp beam; 4 the pile warps; 5 the let-off rolls for the pile warps and 6 the whip roll. The warps are led through the usual harness mechanism indicated at 7 for the formation of the sheds, the pile warps being carried up through the back warps to easing rods and let off intermittently to float between the two back warps of the fabric in the usual and well known manner. The pile warps carry metallic drops 8 and the back warps similar drops 8, these drops being adapted when a warp breaks, and by this is meant to include not only an actual severance of the warp but any abnormal slackness thereof, to close a controlling circuit 9 for the loom stopping mechanism. This mechanism may be of any known type and for the purpose of illustration I have selected one which comprises an auxiliary knock-off lever 10 which rests upon the main knock-off lever 11, both of said levers being pivoted on a bracket 12 extending from the breast beam 12. Secured to a lever 10 is a bracket 13 which carries an electro magnet 14 included in circuit 9. The armature 15 of said magnet projects toward the lay 16 on which is fixed a tappet 17. The magnet 14 is normally deenergized so that its armature is out of the path of tappet 17 on the beat up of the lay, but when a back or pile war breaks the controlling circuit 9 is closed tiereby energizing-said magnet and positioning its armature in the path of said tappet on the next beat up of the lay. T/Vhen tappet l7 impinges against armature 15 auxiliary lever 10 will be shifted and thus act on shipper lever 18 to release it from its retaining shoulder 19 to stop the loom; The main knock-off lever 11 is connected at its free end to the slide 20 which carries the weft fork 21, the latter cooperating with the weft hammer (not shown) in the usual manner to release the shipper lever upon the exhaustion or failure of the filling. A let-off lever 22 fixed-on a rock shaft 23 is adapted, when impinged upon by the knock-off lever 11, to lift the back awl of the take-up ratchet. This construction is well known and requires no further description.

To effect the closing of circuit 9 to energize magnet 14 for the purpose above stated I may em loy metallic drop devices 8, 8, of any wel known type. The form shown is provided with a closed slot 24 in the upper art thereof, and an open ended slot 25 in the ower part thereof, the latter serving as a thread aperture, as clearly indicated in Fig. 7. Referring more particularly to Figs. 1, 5, 6 and 7, the pile warps 4 ass over and are supported by two paralle easing rods 26 fixed at their ends in plates 27, one only of said plates being shown. Plates 27 have mounted in them a compound terminal comprising a bar 28 and a blade 29 set into the upper edge thereof, said bar and blade being insulated from each other and connected to the respective terminals of circuit 9. The bar 28 is insulated from the supporting plates 27 as indicated in Fig. 5. This form of termeans for automatically raising t minal is well known. As shown in Fig. 1 the drop devices 8 are supported on the short lengths of the ile warps 4 which latter eX- tend across an bridge the space between the easing rods 26. In the present embodiment of the invention the compound terminals eX- tend through the closed slots 24 of the drops 8 above the point of suspension of said drops on the pile warps. Plates 27 which support the easing rods are connected by wires 30, in which are springs 31 to serve as a cushion or easement, to the usual mechanism adapted to take up the slack warp. The end plates are uided in their up and down movements in s ots in brackets 32 fixed to the loom frame.

The operation of the mechanism so far de' scribed will be readily understood. During the normal running of the loom the drop devices will be supported on the warps out of contact with the blade 29 of the compound terminal. When, however, either a back or a ile warp breaks the corresponding drop wi 1 be released and falling upon the blade 29 of said terminal will close circuit 9, it being understood that the drop devices are always in contact with bar 28 of said terminal. The ma net 14 being thus energized the knock-o mechanism will be set in operation to stop the loom.

The application of circuit closing drop de vices to a pile fabric loom has been successfully made in substantially the manner above described. It has been found in practice, however, that when using a pile warp of soft, fluffy material an appreciable quantity of lint is thrown off which collects in balls in front of the drops and is ultimately carried into the fabric. The cleaning of the drops at stated intervals to prevent this is apt to be neglected by operatives, and furthermore the close assemblage of the dro s renders such cleaning unhandy and troub esome to accomplish, besides resulting in loss of time due to the necessary stopping of the loom. In order to prevent the accumulation of an undesirable quantity of lint and thus obviate the presence of bunches in the fabric, and to do away with the necessity of manually cleaning the drops, I have 1provided e drops from the pile warps at frequent intervals during the normal running of the loom.

The mechanism devised by me to accomplish the above result is illustrated in Fig. 1 and comprises a pivoted stop plate 33 extending across the loom below each series of pile warp drops. These plates are connected at each end by links 34 to' levers 35. Said levers carry followers 36 which engage cams 37 and 38, the cams at one side of the loom only being shown. Cams 37 and 38 are so timed relatively to the rising and falling movements of the drops that the corresponding plate 33 will be normally out of the path I 9 will of the drops. in the construction shown the plates 33 are held in an inclined position indicated. at the right hand series of drops by the high point of the cam until immediately before the normal completion of the downward movement of the drops. At such time the lowpoint of the cam acting through its corresponding leyer and connecting link will swing its plate 33 to a substantially horizontal position so that it will lie across the path of the descending drops. The drops will then contact with the plate and be raised from the supportingpile warps during the period that the follower is on the low point of the cam. This continues until the drops are picked up by the warps on the upward movement of the easing rods when plate 33 will be moved to its normal position. Instead of pivoting the stop plates so that they will swing in an arc of a circle they may be mounted on guides and moved in horizontal planes into and out of the path of the drops.

The cams for operating the stop plates 33 will be timed relatively to each other so that as each series of drops is moved downwardly with the easing rods a plate 33 will be properly positioned for the described purose. The cams may also be timed to raise the drops at each downward movement, or on each alternate descent, or otherwise as may be desired.

The drawings show the cams 37 and 38 disposed diametrically opposite to each other so that they a'ct alternately to raise the corresponding series of drops. Such temporary release of the drops from the supporting pile warps will-either prevent the accumulation of lint or only such an insignificant amount as not to be noticeable in the fabric. Care should be observed in placing the plates 33 and in providing a slot 24 in the drop of sufficient length as to permit of the desired movement of the drop to free it from the warp without causing the dro to engage the blade 29 of the compoun terminal. That is, the distance between the lower side of the bar 28 of said terminal and the lower end wall. of slot 24 of the drop should be such as to permit the drop to rise a suflicient dis tance to clear its supporting warp thread; and on the other hand, when the easing rods are raised the warpthread should engage the end wall of slot 25 of the corresponding drop before opportunity is given the blade 29 to engage the upper end wall of slot 24 which would effect the knocking off of the loom.

The drops of the left hand series in Fig. 1 are shown in contact with their plate 33 to permit the escape of lint if any has accumulated, while the drops of the right hand series are shown in their uppermost position and supported on the corresponding ile war sv Should a pile warp happen to brea while t e corres onding drop is on its plate 33, circuit be closed when the compound terminal in its upward movement picks up the fallen dro T e drop devices 8 on the back warps 2 are similar to those above described. These warps pass over and are supported on a fixed plate 39 (Fig. 1) which is slotted to serve as a guide for the drops. The compound terminal is also similar to that above described except that it is secured to a fixed plate in the usual manner and not to a movable plate as with the terminals which cooperate with the pile warp drops.

What I claim and desire to secure by Letters Patent of the United States is 1. In a warp stop motion for a pile fabric loom the combination of loom stopping mechanism, a controlling circuit for said mechanism, drop devices adapted to close said circuit when a pile warp breaks, said drops being carried by the unbroken pile warps as they rise and all with the easing rods, a stop plate extending transversely of the loom, and means for moving said plate into position to receive the drops on their downward movement to temporarily release them from the supporting warps.

2. In a warp stop motion for a pile fabric loom the combination of loom stopping mechanism, a controlling circuit for said mechanism, drop devices adapted to close said circuit when a pile warp breaks, said drops being carried by the unbroken pile warps as they rise and fall with the easin g rods, a pivoted stop plate normally out of the path of the rising and falling drops, and a cam for moving said plate into position to receive the drops on their downward movement to temporarily release them from the supporting warps.

3. In a warp stop motion for a pile fabric loom the combination of loom stopping mechanism, a controlling circuit for said mechanism, a series of drop devices for each pile warp adapted to close said circuit when a pile warp breaks, said drops being carried by the unbroken warps as they rise and fall with the easing rods, a stop plate for each series of drops extending transversely of the loom, and means for alternately moving said plates whereby as a given series of drops approaches its lowermost position the drops wi be temporarily released from their supporting warps.

- In testimony whereof I have hereunto signed my name in the presence of two subscribing witnesses.

JOSEPH CORZILIUS. Witnesses:

HARRY M. BURKE,

CATHERINE M. BURKE. 

